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Sportster Motorcycle Engine Conversions Advice, questions, and tips for 1200, 1250, 1340, 1450 etc... for Sportster and Buell motorcycle engine conversions

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  #51  
Old 1 Week Ago
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60Gunner 60Gunner is offline
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What I mean is if you chose open new map on your computer in the tc88 software and chose race and set initial 2 slope 0 you can see that table. I used it as a guide for my map in the low map/low rpm range. My switches are on 5/5.
Map is sent.
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05 1200/1250C/Hammer 570 Cams/E1 clutch kit
TC88A Gunner's V00D00 map/DCPR7E/Taylor Pro 8mm
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HSR42 25 pilot 1 1/2 turns 97 needle 2nd groove 170 main
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  #52  
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OK
I have NEVER used that function !
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Thy Sportster Come
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On Earth as it is on Salt
2006 Sportster XL1250C
Hammer Sledge Heads 1.98X1.61 Valves
Hammer 600 Cams
Big Ass CP/Hammer Pistons
Mikuni HSR 45 /Hammer Billet Manifold (Now HSR 48)
Jetted 27.5 slow,182.5 Main
97 Needle,Clip posistion 3
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Daytona Twin Tec TC88A,Rico Scarecrow Map
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Royal Purple 20W50 MC Primary oil
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Max Power, 111.47
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Best 1/4 Mile ET to date 11.85
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  #53  
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FYI, here is exactly what I have in my HSR-42
180 main
723 Y8 Needle Jet
8DDY1 - 97 Needle
Clip second groove from top
27.5 pilot
3/4 turn mix
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  #54  
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Thanks Pete !
Ill check my notes later and see whats in the 48 on the bike now
Close to Mat Hormels tune though
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Heres what my notes say
27.5 pilot
185 main
97 needle,clip # 2
Y8 needle jet
#60 pump
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Damn, that's some juice, guys. Thanks.
I like the idea of the Y8 needle jet rather than the 96 needle 3rd clip.

3/4 turn with screw and 27.5 pilot? You must have the slide open pretty far then at idle?
M8ne starts to die at 1 1/4 turns out with the 25 but I cant get to slow turning it out. It just leans out and pops if I twist the throttle turned that far out.
This is interesting.

Nevermind. I think I've got it. You mean 2 3/4 on the screw. Don't worry about the 2 1/2 turns and go smaller thing.

Last edited by 60Gunner; 1 Week Ago at 13:56..
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Quote:
Originally Posted by rocketmangb View Post
OK
I have NEVER used that function !
It just allows you to see or start out with the timing tables of the switch positions. You can change the values and save it as a custom map then.
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0k, my pilot is good at 25. 1 1/2 turns on the screw. I could go with the 27 and might but not until I get the Y8 needle jet. It's either that or the 96 needle. The 27 pilot doesn't transition well with the 97 needle and Y6 needle jet.
The 170 main feels good. I doubt any bigger will help.
I'm sure I'll be in the upper 80s now with both HP and torque by 5500 rpm. My exhaust plays really well with my cams in the 3000 to 5500 rpm range. It makes some really good power there.
I'd say the 88 was a really good guess on the HP. What surprised me was the torque being that high as well and that early. It's a fun ass ride. How can you not like 88/88 by 5500?

Last edited by 60Gunner; 1 Week Ago at 22:37..
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